Add more safeguards to protect against misinterpreting a chain entry
as a normal scatterlist and vice-versa.

* Make sure the entry isn't a chain when assigning and reading a
  normal sg.

* Clear offset and length when chaining.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

This was a temporary debugging thing for sg chaining testing, revert
it now as it has served its purpose.

This reverts commit 563063a8.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

mmc_init_queue only initializes the scatterlists with sg_init_table()
when using a bounce buffer. This leads to a BUG() when CONFIG_DEBUG_SG
is set.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Fix a memory leak in alloc_disk_node(). Don't forget to free 'dkstats' when the allocation of 'part' failed.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

if blktrace program segfault it will not be able
to call BLKTRACETEARDOWN. Now if we run the blktrace
again that would result in a failure to create the
block/<device> debugfs directory.This will result
in blk_remove_root() to be called which will set
blk_tree_root to NULL. But the  debugfs block dir
still exist because it contain subdirectory.

Now if we try to fix it using BLKTRACETEARDOWN
it won't work because blk_tree_root is NULL.

Fix the same.

Tested as below

root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -d /dev/hdc
Segmentation fault
root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -d /dev/hdc
BLKTRACESETUP: No such file or directory
Failed to start trace on /dev/hdc
root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -k /dev/hdc
root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -d /dev/hdc
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/net-2.6: (41 commits)
  [XFRM]: Fix leak of expired xfrm_states
  [ATM]: [he] initialize lock and tasklet earlier
  [IPV4]: Remove bogus ifdef mess in arp_process
  [SKBUFF]: Free old skb properly in skb_morph
  [IPV4]: Fix memory leak in inet_hashtables.h when NUMA is on
  [IPSEC]: Temporarily remove locks around copying of non-atomic fields
  [TCP] MTUprobe: Cleanup send queue check (no need to loop)
  [TCP]: MTUprobe: receiver window & data available checks fixed
  [MAINTAINERS]: tlan list is subscribers-only
  [SUNRPC]: Remove SPIN_LOCK_UNLOCKED
  [SUNRPC]: Make xprtsock.c:xs_setup_{udp,tcp}() static
  [PFKEY]: Sending an SADB_GET responds with an SADB_GET
  [IRDA]: Compilation for CONFIG_INET=n case
  [IPVS]: Fix compiler warning about unused register_ip_vs_protocol
  [ARP]: Fix arp reply when sender ip 0
  [IPV6] TCPMD5: Fix deleting key operation.
  [IPV6] TCPMD5: Check return value of tcp_alloc_md5sig_pool().
  [IPV4] TCPMD5: Use memmove() instead of memcpy() because we have overlaps.
  [IPV4] TCPMD5: Omit redundant NULL check for kfree() argument.
  ieee80211: Stop net_ratelimit/IEEE80211_DEBUG_DROP log pollution
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  [CRYPTO] api: Fix potential race in crypto_remove_spawn
  [CRYPTO] authenc: Move initialisations up to shut up gcc

* git://git.linux-nfs.org/pub/linux/nfs-2.6:
  NFS: Clean up new multi-segment direct I/O changes
  NFS: Ensure we return zero if applications attempt to write zero bytes
  NFS: Support multiple segment iovecs in the NFS direct I/O path
  NFS: Introduce iovec I/O helpers to fs/nfs/direct.c
  SUNRPC: Add missing "space" to net/sunrpc/auth_gss.c
  SUNRPC: make sunrpc/xprtsock.c:xs_setup_{udp,tcp}() static
  NFS: fs/nfs/dir.c should #include "internal.h"
  NFS: make nfs_wb_page_priority() static
  NFS: mount failure causes bad page state
  SUNRPC: remove NFS/RDMA client's binary sysctls
  kernel BUG at fs/nfs/namespace.c:108! - can be triggered by bad server
  sunrpc: rpc_pipe_poll may miss available data in some cases
  sunrpc: return error if unsupported enctype or cksumtype is encountered
  sunrpc: gss_pipe_downcall(), don't assume all errors are transient
  NFS: Fix the ustat() regression

* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
  sched: bump version of kernel/sched_debug.c
  sched: fix minimum granularity tunings
  sched: fix RLIMIT_CPU comment
  sched: fix kernel/acct.c comment
  sched: fix prev_stime calculation
  sched: don't forget to unlock uids_mutex on error paths

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: fix APIC related bootup crash on Athlon XP CPUs
  time: add ADJ_OFFSET_SS_READ
  x86: export the symbol empty_zero_page on the 32-bit x86 architecture
  x86: fix kprobes_64.c inlining borkage
  pci: use pci=bfsort for HP DL385 G2, DL585 G2
  x86: correctly set UTS_MACHINE for "make ARCH=x86"
  lockdep: annotate do_debug() trap handler
  x86: turn off iommu merge by default
  x86: fix ACPI compile for LOCAL_APIC=n
  x86: printk kernel version in WARN_ON and other dump_stack users
  ACPI: Set max_cstate to 1 for early Opterons.
  x86: fix NMI watchdog & 'stopped time' problem

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (56 commits)
  Blackfin arch: fix bug when enable uart1 with uart0 disabled => no initial console
  Blackfin arch: split apart dump_bfin_regs and merge/remove show_regs from process.c, which was largely duplicated
  Blackfin arch: use common __INIT/__FINIT defines rather than setting the .section ourselves to .init.text
  Blackfin arch: fix bug when sending signals with the wrong PC, cause gdb get confused
  Blackfin arch: Ensure we printk out strings with the proper loglevel
  Blackfin arch: Need to specify ax with the .init.text section,
  Blackfin arch: Update Kconfig to latest Blackfin silicon datasheets
  Blackfin arch: update defconfig files
  Blackfin arch: Fix typo, and add ENDPROC - no functional changes
  Blackfin arch: convert READY to DMA_READY as it causes build errors in common sound code otherwise
  Blackfin arch: add defines for the on-chip L1 ROM of BF54x
  Blackfin arch: cplb and map header file cleanup
  Blackfin arch: cleanup the cplb declares
  Blackfin arch: fix broken on BF52x, remove silly checks on processors for L1_SCRATCH defines
  Blackfin arch: add support for working around anomaly 05000312
  Blackfin arch: cleanup BF54x header file and add BF547 definition
  Blackfin arch: fix building for BF542 processors which only have 1 TWI
  Blackfin arch: rename _return_from_exception to _bfin_return_from_exception and export it
  Blackfin arch: move EXPORT_SYMBOL() to C files where the symbol is actually defined
  Blackfin arch: fix bug NOR Flash MTD mount fail
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.24:
  sh: include ax88796 in the defconfig for r7785rp
  sh: include ax88796 in the defconfig for r7780mp
  sh: fix R2D-1 CF support
  fb: Orphan imsttfb.
  sh: Update mailing list info.
  sh: lockless UTLB miss fast-path.
  sh: Kill off UTLB flush in fast-path.
  sh: Fix copy_{to,from}_user_page() with cache disabled.

Plip passes a string "name" that is allocated on stack to
parport_register_device.  parport_register_device holds the pointer to
"name" and when the registering function exits, it points nowhere.

On some machine, this bug causes bad names to appear in /proc, such as
/proc/sys/dev/parport/parport0/devices/T^/�X^/�, on others, the plip
proc node is completely missing.

The patch also fixes documentation to note this requirement.
Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

netif_rx is meant to be called from interrupts because it doesn't wake
up ksoftirqd.  For calling from outside interrupts, netif_rx_ni exists.

This fixes plip to use netif_rx_ni.  It fixes the infamous error "NOHZ:
local_softirq_panding 08" that happens on some machines with NOHZ and
plip --- it is caused by the fact that softirq is pending and ksoftirqd
is sleeping.
Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc:
  mmc: Avoid re-using minor numbers before the original device is closed.
  tifm_sd: handle non-power-of-2 block sizes
  mmc_block: check card state after write

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] Fix check after use error in ACL code
  [CIFS] Fix potential data corruption when writing out cached dirty pages
  [CIFS] Fix spurious reconnect on 2nd peek from read of SMB length
  [CIFS] remove build warning
  [CIFS] Have CIFS_SessSetup build correct SPNEGO SessionSetup request
  [CIFS] minor checkpatch cleanup
  [CIFS] have cifs_get_spnego_key get the hostname from TCP_Server_Info
  [CIFS] add hostname field to TCP_Server_Info struct
  [CIFS] clean up error handling in cifs_mount
  [CIFS] add ver= prefix to upcall format version
  [CIFS] Fix buffer overflow if server sends corrupt response to small

... which I've found on a Sapphire X550 (Silent).
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andreas Herrmann <aherrman@arcor.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (21 commits)
  libata: bump transfer chunk size if it's odd
  libata: Return proper ATA INT status in pata_bf54x driver
  pata_ali: trim trailing whitespace (fix checkpatch complaints)
  pata_isapnp: Polled devices
  pata_hpt37x: Fix cable detect bug spotted by Sergei
  pata_ali: Lots of problems still showing up with small ATAPI DMA
  pata_ali: Add Mitac 8317 and derivatives
  libata-core: List more documentation sources for reference
  ata_piix: Invalid use of writel/readl with iomap
  sata_sil24: fix sg table sizing
  pata_jmicron: fix disabled port handling in jmicron_pre_reset()
  pata_sil680: kill bogus reset code (take 2)
  ata_piix: port enable for the first SATA controller of ICH8 is 0xf not 0x3
  ata_piix: only enable the first port on apple macbook pro
  ata_piix: reorganize controller IDs
  pata_sis.c: Add Packard Bell EasyNote K5305 to laptops
  libata-scsi: be tolerant of 12-byte ATAPI commands in 16-byte CDBs
  libata: use ATA_HORKAGE_STUCK_ERR for ATAPI tape drives
  libata: workaround DRQ=1 ERR=1 for ATAPI tape drives
  libata: remove unused functions
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  virtio: fix net driver loop case where we fail to restart
  module: fix and elaborate comments
  virtio: fix module/device unloading
  lguest: Fix uninitialized members in example launcher

The mail service for the mac.linux-m68k.org domain is defunct.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Amiga zorro bus: Add missing zorro_device_remove(). Without this ifconfig and
/proc/net/dev oops after unloading a Zorro network device driver module.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

m68k: export atari_keyb_init

This patch fixes the following build error:

  ..
    MODPOST 25 modules
  ERROR: "atari_keyb_init" [drivers/input/mouse/atarimouse.ko] undefined!
  ERROR: "atari_keyb_init" [drivers/input/keyboard/atakbd.ko] undefined!
  make[2]: *** [__modpost] Error 1
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

The xfrm_timer calls __xfrm_state_delete, which drops the final reference
manually without triggering destruction of the state. Change it to use
xfrm_state_put to add the state to the gc list when we're dropping the
last reference. The timer function may still continue to use the state
safely since the final destruction does a del_timer_sync().
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (39 commits)
  ACPI: EC: Workaround for optimized controllers (version 3)
  ACPI: EC: use printk_ratelimit(), add some DEBUG mode messages
  Revert "ACPI: EC: Workaround for optimized controllers"
  ACPI: fix two IRQ8 issues in IOAPIC mode
  ACPI: Add missing spaces to printk format
  cpuidle: fix HP nx6125 regression
  cpuidle: add sched_clock_idle_[sleep|wakeup]_event() hooks
  cpuidle: fix C3 for no bus-master control case
  ACPI: thinkpad-acpi: fix oops when a module parameter has no value
  Revert "Fix very high interrupt rate for IRQ8 (rtc) unless pnpacpi=off"
  ACPI: EC: Don't init EC early if it has no _INI
  Revert "acpi: make ACPI_PROCFS default to y"
  Revert "ACPI: add documentation for deprecated /proc/acpi/battery in ACPI_PROCFS"
  ACPI: Split out control for /proc/acpi entries from battery, ac, and sbs.
  ACPI: Video: Increase buffer size for writes to brightness proc file.
  ACPI: EC: Workaround for optimized controllers
  ACPI: SBS: Fix retval warning
  ACPI: Enable MSR (FixedHW) support for T-States
  ACPI: Get throttling info from BIOS only after evaluating _PDC
  ACPI: Use _TSS for throttling control, when present. Add error checks.
  ...

* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6:
  [S390] cio: Register/unregister subchannels only from kslowcrw.
  [S390] Add missing die_notifier() call to die().
  [S390] Fix memory detection.
  [S390] Explicitly code allocpercpu calls in iucv
  [S390] Dont overwrite lowcores on smp_send_stop().
  [S390] Optimize storage key handling for anonymous pages
  [S390] Fix kernel preemption.
  [S390] appldata: remove unused binary sysctls.
  [S390] cmm: remove unused binary sysctls.
  [S390] Fix irq tracing and lockdep_sys_exit calls.
  [S390] magic sysrq: check for in_atomic before doing an console_unblank
  [S390] cio: change device sense procedure to work with pav aliases

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (27 commits)
  [POWERPC] 83xx: Update mpc8349emitx(gp) defconfig for USB
  [POWERPC] 83xx: Update mpc832x_rdb_defconfig to enable MMC-over-SPI
  [POWERPC] 83xx: MPC832x RDB - remove spidev stub, use mmc_spi
  [POWERPC] 8xxx: MDS board RTC fixes
  [POWERPC] Fix 8xx build breakage due to _tlbie changes
  [POWERPC] Fix device tree interrupt map for Freescale ULI1575 boards
  [POWERPC] Fix possible division by zero in scaled time accounting
  [POWERPC] spufs: Fix context destroy vs /spu readdir race
  [POWERPC] Fix RTAS os-term usage on kernel panic
  [POWERPC] 83xx: Handle mpc8360 rev. 2.1 RGMII timing erratum
  [POWERPC] Document rgmii-rxid and rgmii-txid phy-connection-types
  [POWERPC] 83xx: Fix 2nd UCC entry in mpc832x_mds.dts
  [POWERPC] 83xx: mpc832x mds: Fix board PHY reset code
  [POWERPC] Fix potential NULL dereference
  [POWERPC] vdso: Fixes for cache block sizes
  [POWERPC] pasemi: Don't reset mpic at boot
  [POWERPC] Fix kmalloc alignment on non-coherent DMA platforms
  [POWERPC] Fix build failure on legacy iSeries
  [POWERPC] 4xx: Use virtual PVR value to init FPU on arch/ppc 440EP
  [POWERPC] 4xx: UIC add mask_ack callback
  ...

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=9416Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  [MIPS] vpe: Add missing "space"
  [MIPS] Compliment va_start() with va_end().
  [MIPS] IP22: Fix broken eeprom access by using __raw_readl/__raw_writel
  [MIPS] IP22: Fix broken EISA interrupt setup by switching to generic i8259
  [MIPS] 64-bit Sibyte kernels need DMA32.
  [MIPS] Only build r4k clocksource for systems that work ok with it.
  [MIPS] Handle R4000/R4400 mfc0 from count register.
  [MIPS] Fix possible hang in LL/SC futex loops.
  [MIPS] Fix context DSP context / TLS pointer switching bug for new threads.
  [MIPS] IP32: More interrupt renumbering fixes.
  [MIPS] time: MIPSsim's plat_time_init doesn't need to be irq safe.
  [MIPS] time: Fix negated condition in cevt-r4k driver.
  [MIPS] Fix pcspeaker build.

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa:
  [ALSA] version 1.0.15
  [ALSA] emu10k1 - Check value ranges in ctl callbacks
  [ALSA] emu10k1: Add mixer controls parameter checking.
  [ALSA] fix private data pointer calculation in CS4270 driver
  [ALSA] portman2x4 - Fix probe error
  [ALSA] ca0106 - Fix write proc assignment
  [ALSA] s3c2443-ac97: compilation fix
  [ALSA] hda-codec - Revert volume knob controls in STAC codecs
  [ALSA] ca0106 - Check value range in ctl callbacks
  [ALSA] hda-codec - Check PINCAP only for PIN widgets
  [ALSA] mpu401: fix recursive locking in timer
  [ALSA] cmipci: fix FLINKON/OFF bits
  [ALSA] hda-codec - Disable shared stream on AD1986A

if you are lucky (unlucky?) enough to have shared interrupts, the
interrupt handler can be called before the tasklet and lock are ready
for use.
Signed-off-by: chas williams <chas@cmf.nrl.navy.mil>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

For a kernel built with "make ARCH=x86" the following system
information is displayed when running the new kernel

    $ uname -m
    x86

On some i386 systems (e.g. K7) we even have the following information

    $ uname -m
    x66

This is weird. The usual information for "uname -m" should be "x86_64"
on 64-bit and "i386" or "i686" on 32-bit.

This patch fixes the issue by setting UTS_MACHINE to "i386" for 32-bit
kernel builds and to "x86_64" for 64-bit kernel builds. I.e., "x86"
won't be used for UTS_MACHINE anymore.

Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andreas Herrmann <aherrman@arcor.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Simplify calling sequence of nfs_direct_{read,write}_schedule(), and
rename them to reflect their new role.
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

A zero byte count direct write request should be a successful no-op, not an
error.
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

Allow applications to perform asynchronous scatter-gather direct I/O
to NFS files.
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

Add helpers that iterate over multi-segment iovecs.  These will
be used to support multi-segment scatter/gather direct I/O in a
later patch.
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

xs_setup_{udp,tcp}() can now become static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

Every file should include the headers containing the prototypes for its global
functions (in this case nfs_access_cache_shrinker()).
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

nfs_wb_page_priority() can now become static.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>